How do I celaning car?

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Could be a number of things. Most likely AFM or spark plugs.

If it's only happening on heavy boost I'd say the plugs.

I run a Unichip on my MY00 WRX, with a similar setup, but mine has the boost module, instead of using a bleed valve or anything. I had a similar problem to you last year, and thought it could have been a tuning issue, but turned out the plugs just needed changing.

Hi. Thanks for the input. I went to the mechanic and he tried a new one with no luck. It certianly is worse at night and feels like it is barely able to fire under strong throttle. I did get the codes checked and a knock sensor error came up and one other. I have been told it could be a spark related issue, perhaps a lead or plug problem. I will definately take it easy until it is sorted. Cheers

It's over boosting, worse on colder nights.

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Hi all, thanks for your ideas. It is now fixed! It was a hole in the intake pipe and the plugs were absolutely stuffed from the engine running to lean. Cheers for that.

I had the same problem, spark plugs were cactus, good to see the problem fixed

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Hi guys im new to this page just want to ask a question do any of you know who programs unichips in wa as i have recently brought a my04 sti and found out it has one are they easily removable as my car does seem a bit slugish boost doesn't kick in till around the 3500rpm mark is this normal any info would be great

normal.

remove unichip they are fucking horrid.

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are they easily removed or will a performance shop have to do it ?

stirex:
West Racing in Osborne Park does unichip.
westracing.com.au
Unit 5/6 O'Malley Street 9446 1913

nothing wrong with unichip. depends on the application.
I had one on for a few years, got < 10% more power, more torque and fuel economy.